sw.js

/* global importScripts, firebase */

importScripts('https://www.gstatic.com/firebasejs/7.5.0/firebase-app.js');
importScripts('https://www.gstatic.com/firebasejs/7.5.0/firebase-messaging.js');

var firebaseConfig = {
    apiKey: "AIzaSyBJguGFPPZXozdkPVpBZNbGMVJ_LTOYuQA",
    authDomain: "jcubic-1500107003772.firebaseapp.com",
    databaseURL: "https://jcubic-1500107003772.firebaseio.com",
    projectId: "jcubic-1500107003772",
    storageBucket: "jcubic-1500107003772.appspot.com",
    messagingSenderId: "1005897028349",
    appId: "1:1005897028349:web:f9f90304397535db17e494"
};

// Initialize Firebase
firebase.initializeApp(firebaseConfig);
const messaging = firebase.messaging();

messaging.setBackgroundMessageHandler(function(payload) {
  const {title, ...options} = payload.notification;
  return self.registration.showNotification(title, options);
});

self.addEventListener('install', self.skipWaiting);
self.addEventListener('activate', self.skipWaiting);